题解 | #统计一句话中重复单词的个数#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String line = scanner.nextLine();
        Map<Character, Integer> map = new LinkedHashMap<Character, Integer>();

        for(char c:line.toCharArray()){
            if(Character.isLetter(c)){
                map.put(c,(map.getOrDefault(c,0)+1));
            }
        }
        
        Set<Map.Entry<Character, Integer>> entrys = map.entrySet();
        for (Map.Entry<Character, Integer> entry : entrys) {
            System.out.println(entry.getKey() + ":" + entry.getValue());
        }
    }
}